Electric actuator with speed change and display functions

Abstract

An electric actuator with speed change and display functions comprises a power assembly, a display assembly and a speed change assembly. The power assembly is arranged between the display assembly and the speed change assembly and drives the display assembly and the speed change assembly. The valve has the advantages that the opening degree of the valve can be known through the display pointer or the display piece in the display assembly; a valve is closed or opened through a power assembly, a speed change assembly, a central information processor and a motor for controlling the valve, and meanwhile, under the action of the speed change assembly, the closing or opening speed of the valve is divided into a high-speed gear, a middle-speed gear and a low-speed gear. For different flow speeds in the pipeline, a motor for controlling the valve is controlled to close or open the valve at a corresponding speed by adjusting gears of the speed change assembly, and the problem that resources are wasted due to the fact that the flow speed in the pipeline is too high and the valve cannot be closed in time is solved. Meanwhile, when the difference between the collection amount in the container and the preset amount is small, the valve is slowly closed, so that the preset amount can be collected, and the time of continuously adjusting the opening degree of the valve by an operator to do other work can be saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric actuator field, concretely relates to a kind of electric actuator with variable speed and display function. BACKGROUND

[0002] Electric actuator controls the opening and closing of valve through some devices, in application scene, the valve needing electric actuator control is mostly enclosed in pipeline, and the pipeline end is generally connected to the container of liquid or gas collection, if the collection amount in container reaches predetermined amount, it needs to reduce the opening of valve;But now only the difference between the collection amount in container and predetermined amount in factory building can be observed to try to adjust the opening of valve, when container is relatively close to operator, it can be done, but when container is relatively far from operator, this method is not good for use. In addition, the speed of electric actuator to close or open valve is limited to one, when collection amount reaches predetermined amount, due to the fast flow rate in pipeline, valve cannot be closed quickly, which will cause resource waste;Or the flow rate in pipeline is very slow, after closing valve, collection amount does not reach predetermined amount, it needs to open valve again, which will affect the efficiency of collection work. SUMMARY

[0003] The utility model for solving the above-mentioned technical problem, install display assembly on electric actuator, display assembly includes display disc, display disc is equipped with display sheet or display pointer, the deflection angle of display sheet or display pointer is consistent with the opening of valve, the opening of valve can be known through the deflection angle of display sheet or display pointer;In addition, two control valve opening and closing speeds are added in the utility model on electric actuator, when the flow rate in pipeline is fast, it is closed quickly, when the flow rate in pipeline is slow, it is closed slowly.

[0004] To achieve the above object, the utility model discloses a technical scheme of an electric actuator with variable speed and display function, which comprises a power assembly, a display assembly and a variable speed assembly. The power assembly is arranged between the display assembly and the variable speed assembly, and drives the display assembly and the variable speed assembly respectively. The power assembly comprises a first gear and a second gear. The first gear is an input end of the power assembly and is engaged with a gear of an external motor. The second gear is an output end of the power assembly. The variable speed assembly comprises an emergency stop assembly and a variable speed gear set. The emergency stop assembly is arranged between the variable speed gear set and the second gear. The emergency stop assembly comprises an emergency stop gear. The emergency stop gear is engaged with or disengaged from the second gear and an input gear of the variable speed gear set. The variable speed assembly further comprises an on-off sensor for sending a central information processor to open or close a valve. The on-off sensor is arranged on one side of the variable speed gear set. An output end of the variable speed gear set is slidably connected to the on-off sensor. The display assembly comprises a display disc and a display gear set. The display gear set is directly engaged with the second gear or an idler gear is arranged between the display gear set and the second gear. The display disc is arranged above the display gear set. At least one display piece or one display pointer is arranged on the display disc. The deflection angle of the display piece or the display pointer on the display disc corresponds to the opening degree of the valve.

[0005] Further, the utility model discloses an electric actuator with variable speed and display function, which further comprises a shell. The power assembly, the display assembly and the variable speed assembly are arranged on the shell. The power assembly comprises a worm, a worm wheel and a transmission rod. The first gear is arranged at one end of the worm and has an axis parallel to the axis of the worm. The worm is rotatably arranged on the shell. The worm wheel is arranged at the end of the transmission rod and has an axis parallel to the axis of the transmission rod. The worm wheel is engaged with the worm, and the axis of the worm wheel is perpendicular to the axis of the worm. The transmission rod is rotatably arranged on the shell, and the axis of the transmission rod is perpendicular to the axis of the worm. The second gear is sleeved on the transmission rod. The axis of the second gear is parallel to the axis of the transmission rod, and the second gear is arranged on one side of the worm wheel.

[0006] Further, the emergency stop assembly comprises an emergency stop assembly support shaft, a spring, a spring support plate and an emergency stop button. The emergency stop assembly support shaft is vertically rotatably arranged on the shell. The spring support plate is arranged on the emergency stop assembly support shaft. One end of the spring is fixedly arranged on the spring support plate. The emergency stop gear is slidably connected to the emergency stop assembly support shaft, and the axis of the emergency stop gear is parallel to the axis of the emergency stop assembly support shaft. The other end of the spring is fixedly arranged on one side of the emergency stop gear. The emergency stop button is arranged on one side of the emergency stop gear. The lower end of the emergency stop button is rotatably connected to the other side of the emergency stop gear. Preferably, when a fault occurs in the variable speed gear set and the transmission behind the variable speed gear set, the power transmitted to the variable speed gear set can be disconnected by pressing the emergency stop button immediately, thereby protecting the weak parts inside the electric actuator.

[0007] Further, the variable gear set comprises a variable gear shaft, a variable support rod, a variable gear, and a fourth gear; the variable gear shaft is arranged on the housing, and at least one fourth gear is arranged on the variable gear shaft; the variable gear shaft is arranged between the emergency stop assembly and the variable gear; one of the fourth gears arranged on the variable gear shaft is engaged with the emergency stop gear; the variable support rod is arranged on the housing, and the variable gear is movably connected to the variable support rod; the lower end of the variable gear is provided with a fourth gear, and the fourth gear on the variable gear is engaged with one of the fourth gears on the variable gear shaft or other gears on the variable gear shaft.

[0008] Further, the variable gear set further comprises a first transmission shaft, a second transmission shaft, and a combination gear; the first transmission shaft and the second transmission shaft are arranged on the housing; at least one first transmission shaft is arranged, and at least one second transmission shaft is arranged; the first transmission shaft is arranged on one side of the variable gear, and the second transmission shaft is arranged on one side of the first transmission shaft; at least one combination gear is arranged on the first transmission shaft, and one of the combination gears on the first transmission shaft is engaged with the fourth gear on the variable gear or the fourth gear on the variable gear is engaged with other gears on the first transmission shaft; at least one combination gear is arranged on the second transmission shaft, and the combination gear on the second transmission shaft is engaged with the combination gear on the first transmission shaft.

[0009] Further, the variable gear set further comprises a shifting rod and a shifting block; one end of the shifting rod is fixedly arranged on the output gear of the variable gear set, and the other end of the shifting rod is provided with a shifting block.

[0010] The shifting block is a protruding block extending to one side of the shifting rod. Further, the start-stop sensor comprises a pushing block fixedly connected or slidably connected to the start-stop sensor; the shifting block is slidably connected to the pushing block or is disconnected therefrom. Preferably, the shifting block has three rotation speeds, and the shifting block slides on the pushing block of the start-stop sensor while rotating; after the start-stop sensor senses the rotation speed of the shifting block, the start-stop sensor sends the rotation speed information to the central information processor, and the central information processor matches the motor controlling the valve to close or open the valve at the same speed as the shifting block.

[0011] Further, the display assembly comprises a display block, one end of the display block is fixedly connected to the output gear of the display gear set, and the other end of the display block is provided with a display disc; the display disc is fixedly connected or movably connected to a display sheet or a display pointer. Preferably, the speed of opening or closing the valve is consistent with the rotation speed of the display sheet or the display pointer, and the speed of opening or closing the valve can be known through the rotation speed of the display sheet or the display pointer, and the opening size of the valve can also be known from the deflection angle of the display sheet or the display pointer.

[0012] Further, the electric actuator with variable speed and display function further comprises a terminal fixedly connected to the shell, the lead of the start-stop sensor is connected to the terminal, and the lead of the central information processor is also connected to the terminal.

[0013] The utility model has the advantages and beneficial effects that:

[0014] 1、The operator can know the opening size of the valve by observing the display sheet or display disc in the display assembly, the utility model realizes closing or opening the valve through the power assembly, variable speed assembly, central information processor and motor for controlling the valve, and the closing or opening speed of the valve under the action of the variable speed assembly is divided into fast gear, medium speed gear and slow speed gear, the motor for controlling the valve is adjusted to adopt corresponding speed to close or open the valve according to different flow rates in the pipeline, and the problem of resource waste caused by too fast flow rate in the pipeline and not closing the valve in time is solved; meanwhile, when the collection amount in the container is not much different from the predetermined amount, slow closing of the valve can not only collect the predetermined amount but also save the time of the operator for continuously adjusting the opening of the valve to do other work.

[0015] 2、The utility model can also quickly collect to improve production efficiency, that is, directly open the valve to the maximum, and then quickly close the valve when the collection amount reaches the predetermined amount. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic view of the utility model;

[0017] Figure 2 It is the power assembly structure schematic view of the utility model;

[0018] Figure 3 It is the variable speed assembly structure schematic view of the utility model;

[0019] Figure 4 It is the internal structure schematic view of the utility model;

[0020] Figure 5 It is the emergency stop assembly structure schematic view of the utility model;

[0021] Figure 6 It is the variable speed gear set structure schematic view of the utility model;

[0022] Figure 7 It is the variable speed lever structure schematic view of the utility model;

[0023] Figure 8 It is the variable speed gear set gear transmission route schematic view of the utility model;

[0024] Figure 9 is the start-stop sensor structure schematic of the utility model Figure 1 ;

[0025] Figure 10 is the internal structure schematic of the utility model

[0026] Figure 11 is the display assembly partial structure schematic of the utility model

[0027] Figure 12 is the start-stop sensor structure schematic of the utility model Figure 2 ;

[0028] Figure 13 is the display assembly partial structure schematic of the utility model Figure 2 ;

[0029] Figure 14 is the display assembly partial structure schematic of the utility model Figure 3 .

[0030] In the drawing: shell 4, power assembly 1, speed change assembly 2, display assembly 3, first gear 1-1, worm 1-2, transmission rod 1-3, worm wheel 1-4, second gear 1-5, guard frame 4-2, partition 4-1, terminal 4-3, speed change gear set 2-1, emergency stop assembly 2-2, emergency stop assembly support shaft 2-3, emergency stop gear 2-4, spring 2-5, spring support plate 2-6, emergency stop button 2-7, connecting column 2-8, first clamping block 2-9, middle column 2-10, second clamping block 2-11, speed change gear shaft 2-12, speed change lever 2-13, speed change support lever 2-14, first transmission shaft 2-15, second transmission shaft 2-16, third gear 2-17, fourth gear 2-18, combination gear 2-19, push lever 2-20, push block 2-21, matching block 2-22, convex ball 2-23, concave pit 2-24, limiting groove 2-25, third clamping block 2-26, start-stop sensor 2-27, push block 2-28, push spring 2-29, display gear set 3-1, fifth gear 3-2, display block 3-3, display disc 3-4, display sheet one 3-5, display sheet two 3-6, fixed rod 3-7. DETAILED DESCRIPTION

[0031] Refer to Figure 1 , Figure 4 , Figure 11As shown in the figure, an electric actuator with variable speed and display function comprises a power assembly 1, a variable speed assembly 2, a display assembly 3, and a housing 4; the housing 4 is used to install the power assembly 1, the variable speed assembly 2, and the display assembly 3; the power assembly 1 is used to receive power provided by an external device to the electric actuator and transmit the power to the variable speed assembly 2 and the display assembly 3; the output end of the variable speed assembly 2 is connected to a start-stop sensor 2-27 and a central information processor to control the opening and closing of a valve and the speed of the opening and closing of the valve; the display assembly 3 is provided with a display sheet 1 3-5 and a display sheet 2 3-6; the relative deflection angle of the display sheet 1 3-5 and the display sheet 2 3-6 is consistent with the opening degree of the valve, and the opening degree of the valve can be known by the relative deflection angle of the two display sheets.

[0032] Referring to Figures 2-4 As shown in the figure, the housing 4 comprises a partition plate 4-1, the partition plate 4-1 is arranged in the housing 4, the power assembly 1 comprises a first gear 1-1, a worm 1-2, a transmission rod 1-3, a worm wheel 1-4, and a second gear 1-5; the first gear 1-1 is engaged with a gear of an external motor, the first gear 1-1 is coaxial with the worm 1-2, the worm 1-2 is rotatably arranged on the housing 4, the worm wheel 1-4 is arranged at one end of the transmission rod 1-3, the worm 1-2 is engaged with the worm wheel 1-4, the axis of the worm 1-2 is perpendicular to the axis of the worm wheel 1-4, the transmission rod 1-3 is rotatably arranged on the housing 4 through the partition plate 4-1, the partition plate 4-1 seals the worm wheel 1-4 and the worm 1-2 in the housing 4 to prevent dust from entering; the display assembly 3 and the variable speed assembly 2 are installed on the partition plate 4-1. The second gear 1-5 is sleeved on the transmission rod 1-3; the first gear 1-1 is engaged with the gear of the external motor to transmit power to the worm 1-2, and the worm 1-2 transmits power to the transmission rod 1-3 by engaging with the worm wheel 1-4.

[0033] Referring to Figures 3-5As shown, the transmission assembly 2 includes a transmission gear set 2-1, an emergency stop assembly 2-2 arranged on the shell 4 through the partition plate 4-1; the emergency stop assembly 2-2 includes an emergency stop assembly support shaft 2-3, an emergency stop gear 2-4, a spring 2-5, a spring support plate 2-6, an emergency stop button 2-7, a connecting column 2-8, a first clamping block 2-9, an intermediate column 2-10, a second clamping block 2-11, a third clamping block 2-26. The emergency stop assembly support shaft 2-3 is rotationally arranged on the shell 4, and a spring support plate 2-6 is fixedly arranged on the emergency stop assembly support shaft 2-3, one end of the spring support plate 2-6 is fixedly arranged on the spring 2-5, the other end of the spring 2-5 is fixedly arranged on one side of the emergency stop gear 2-4, the emergency stop gear 2-4 is slidingly connected to the emergency stop assembly support shaft 2-3, the center of the emergency stop gear 2-4 is provided with a groove, the emergency stop assembly support shaft 2-3 is a prism, and the emergency stop gear 2-4 is engaged with the second gear 1-5 on the transmission rod 1-3 and the transmission gear set 2-1 respectively; the transmission rod 1-3 transmits power to the transmission gear set 2-1 through the second gear 1-5 and the emergency stop gear 2-4. The other side of the emergency stop gear 2-4 is fixedly connected with three connecting columns 2-8, the three connecting columns 2-8 are fixedly connected with one side of the first clamping block 2-9, one end of the intermediate column 2-10 is fixedly connected with the other side of the first clamping block 2-9, the other end of the intermediate column 2-10 is fixedly connected with one side of the second clamping block 2-11, the first clamping block 2-9 and the second clamping block 2-11 are discs, the intermediate column 2-10 is a cylinder, and the diameter of the intermediate column 2-10 is smaller than the diameter of the first clamping block 2-9 and the second clamping block 2-11, the lower end of the emergency stop button 2-7 is provided with a third clamping block 2-26, the center of the third clamping block 2-26 is provided with a cylindrical hole with a diameter equal to the diameter of the intermediate column 2-10, and the emergency stop button 2-7 is rotationally arranged on the intermediate column 2-10 through the third clamping block 2-26. Since the emergency stop button 2-7 is rotationally connected to the connecting block fixedly connected to the emergency stop gear 2-4, when the emergency stop gear 2-4 rotates, pressing the emergency stop button downward will not scratch the palm and sprain the wrist. When the transmission gear set 2-1 and the device behind it malfunction, the operator presses the emergency stop button 2-7, the emergency stop button 2-7 presses the emergency stop gear 2-4 to move downward, when the emergency stop button 2-7 is pressed to the bottom, the emergency stop gear 2-4 is disengaged from the second gear 1-5 and the transmission gear set 2-1 respectively, if the emergency stop button 2-7 is released, the emergency stop gear 2-4 is released by the spring 2-5 to return to the position engaged with the second gear 1-5 and the transmission gear set 2-1 respectively.

[0034] Reference Figures 3-8As shown, the variable gear set 2-1 includes a variable gear shaft 2-12, a variable gear rod 2-13, a variable gear support rod 2-14, a matching block 2-22, and fourth gears 2-18, which are installed at multiple positions in this embodiment. The variable gear shaft 2-12 is rotationally connected to the partition plate 4-1, and three fourth gears 2-18 are fixedly arranged on the variable gear shaft 2-12. The fourth gear 2-18 arranged at the lower end of the variable gear shaft 2-12 is engaged with the emergency stop gear 2-4. The variable gear support rod 2-14 is arranged in front of the variable gear shaft 2-12 and is fixedly arranged on the partition plate 4-1. The variable gear support rod 2-14 is a prism. The variable gear rod 2-13 is a cylindrical tube, one end of which is fixedly sleeved with a fourth gear 2-18. A limiting groove 2-25 is hollowed out in the tube at the end sleeved with the fourth gear 2-18. The limiting groove 2-25 is an annular groove with a diameter larger than the inner diameter of the tube. The matching block 2-22 is arranged in the limiting groove 2-25. The size and shape of the matching block 2-22 correspond to the size and shape of the limiting groove 2-25. The matching block is limited by the limiting groove and can only rotate in the variable gear rod. A prismatic groove is formed in the matching block 2-22. The variable gear rod 2-13 is slidingly connected to the variable gear support rod 2-14 through the matching block 2-22, and is rotationally connected to the variable gear support rod 2-14 through the matching block 2-22. Three convex balls 2-23 are arranged at three positions of the variable gear support rod 2-14. The three convex balls 2-23 correspond to the three fourth gears 2-18 on the variable gear shaft 2-12, respectively. A concave pit 2-24 is arranged in the matching block 2-22. When the variable gear support rod 2-14 slides from bottom to top, the variable gear rod 2-13 is clamped by the concave pit 2-24 and the convex ball 2-23 at three positions. Each clamping position is engaged with one of the fourth gears 2-18 on the variable gear rod 2-13 and one of the fourth gears 2-18 on the variable gear shaft 2-12.

[0035] Referring to Figure 6As shown, the variable gear set 2-1 further comprises a first transmission shaft 2-15, a second transmission shaft 2-16, a third gear 2-17, a fourth gear 2-18, a combined gear 2-19, a shifting lever 2-20, and a shifting block 2-21. The combined gear 2-19 is combined by the third gear 2-17 and the fourth gear 2-18. In this embodiment, two first transmission shafts 2-15 and two second transmission shafts 2-16 are provided. The variable gear lever 2-13 is provided with a first transmission shaft 2-15 on each side. Each first transmission shaft 2-15 is provided with a second transmission shaft 2-16 on one side. Each first transmission shaft 2-15 and second transmission shaft 2-16 is fixedly provided on the partition plate 4-1. Three combined gears 2-19 are rotatably provided on each first transmission shaft 2-15. Two combined gears 2-19 are rotatably provided on each second transmission shaft 2-16. The uppermost end of each second transmission shaft 2-16 is provided with a fourth gear 2-18 which is rotatably provided alone and is also the output gear of the second transmission shaft 2-16 and the variable gear set 2-1. The output gear of each second transmission shaft 2-16 is fixedly connected with one end of the shifting lever 2-20. The other end of the shifting lever 2-20 is fixedly connected with one end of the shifting block 2-21. The gears on the first transmission shaft 2-15 and the second transmission shaft 2-16 are in meshing engagement.

[0036] Referring to Figure 6 , Figure 8 As shown, the gear transmission between the first transmission shaft 2-15 and the second transmission shaft 2-16 is a reduction transmission of a pinion gear meshing with a gear wheel. In the position shown in the figure, the fourth gear 2-18 at the lower end of the variable gear lever 2-13 is in meshing engagement with the combined gears 2-19 at the lower end of the two first transmission shafts 2-15 and the fourth gear 2-18 at the lower end of the variable gear shaft 2-12. At this time, there are five stages of reduction between the power input gear of the first transmission shaft 2-15 and the output gear of the second transmission shaft 2-16, and the shifting lever 2-20 rotates at the slowest speed. If the variable gear lever 2-13 is raised by one gear, the fourth gear 2-18 on the variable gear lever 2-13 is in meshing engagement with the combined gears 2-19 in the middle of the two first transmission shafts 2-15 and the fourth gear 2-18 in the middle of the variable gear shaft 2-12. At this time, there are three stages of reduction between the power input gear of the first transmission shaft 2-15 and the output gear of the second transmission shaft 2-16, and the shifting lever 2-20 rotates at a speed that is neither fast nor slow. If it is raised by one gear again, there is only one stage of reduction between the power input gear of the first transmission shaft 2-15 and the output gear of the second transmission shaft 2-16, and the shifting lever 2-20 rotates at the fastest speed.

[0037] Referring to Figure 1 , Figure 4 , Figure 6 , Figure 9The variable speed assembly 2 further comprises an enable-stop sensor 2-27, which comprises a pushing block 2-28 and a pushing spring 2-29; the shell 4 further comprises a protective frame 4-2, which is detachably connected to the shell 4 and is used to protect the internal components of the electric actuator; the shell 4 is further provided with a terminal 4-3, the lead wires of the enable-stop sensor 2-27 are connected to the terminal 4-3, the terminal 4-3 is further connected to the lead wires of the central information processor and the power supply line of the electric actuator, and the enable-stop sensor 2-27 sends signals to the central information processor through the terminal 4-3. In this embodiment, two enable-stop sensors 2-27 are provided and are arranged on the sides of the two rotating rods 2-20 respectively; the pushing block 2-28 is slidingly connected in the enable-stop sensor 2-27, one end of the pushing block 2-28 is connected to the pushing spring 2-29, and the other end of the pushing spring 2-29 is connected to the enable-stop sensor 2-27 and is connected to the internal signal transmitting device; the two rotating rods 2-20 rotate at the same speed and in the same direction, but one rotating rod 2-20 always lags behind the other rotating rod 2-20 by half a turn, and when the rotating block 2-21 on one rotating rod 2-20 is in contact with the pushing block 2-28, the other rotating block 2-21 is in an idle state, one enable-stop sensor 2-27 is set to be on and the other sensor is set to be off; only when the rotating block 2-21 on one rotating rod 2-20 is in contact with the enable-stop sensor 2-27 set to be on and the other rotating block 2-21 is out of contact with the enable-stop sensor 2-27 set to be off, the enable-stop sensor 2-27 sends signals to the central information processor, and the central information processor sends a start signal to the control valve motor to open the valve. Similarly, only when the rotating block 2-21 on one rotating rod 2-20 is out of contact with the enable-stop sensor 2-27 set to be on and the other rotating block 2-21 is in contact with the enable-stop sensor 2-27 set to be off, the valve is closed, which provides a double insurance for the electric actuator to control the valve to prevent the valve from being opened or closed by mistake. When the rotating block 2-21 rotates, it slides on the pushing block 2-28 and pushes the pushing rod 2-28 to slide on the enable-stop sensor 2-27, the enable-stop sensor 2-27 is provided with a sensing device for sensing the moving speed of the pushing block 2-28, the sensing device transmits the moving speed information of the pushing block 2-28 to the internal information transmitting device, the information transmitting device transmits the information to the central information processor, and the central information processor matches the corresponding rotating speed of the valve motor to close or open the valve, and finally the rotating speed of the valve motor matches the rotating speed of the rotating block 2-21.

[0038] Referring to Figure 12As shown, the start-stop sensor 2-27 also has the following embodiment, regarding the second embodiment of the start-stop sensor 2-27, the start-stop sensor 2-27 includes a fixed block 2-30 fixedly arranged on one side of the start-stop sensor 2-27, the fixed block 2-30 is an inner circular arc block matching the rotating track of the dial block 2-21, when the dial block 2-21 rotates a full circle, half of it slides in the fixed block 2-30 and half of it is suspended.

[0039] Referring to Figure 3 , Figure 4 , Figure 10 As shown, the display assembly 3 is arranged behind the gear shifting assembly 2, the display assembly 3 includes a display gear set 3-1 and a display block 3-3 arranged on one end of the display gear set 3-1; in this embodiment, the display gear set 3-1 also includes a gear shifting gear shaft 2-12, a gear shifting lever 2-13, a gear shifting support lever 2-14, a first transmission shaft 2-15 and a second transmission shaft 2-16, which are consistent with the components used by the gear shifting assembly 2, if the gear shifting assembly 2 is shifted, the display assembly 3 also needs to be shifted correspondingly, since the display gear set 3-1 uses the same components as the gear shifting gear set 2-1, the input gear rotating speed of the two is consistent at the same gear, and the output gear rotating speed is also consistent. The display gear set 3-1 also includes a fifth gear 3-2 and a display block 3-3, the fifth gear 3-2 is rotatably arranged on the partition plate 4-1 through a connecting shaft; in this embodiment, the gear parameters of the fifth gear 3-2 are consistent with the gear parameters of the emergency stop gear 2-4, and the emergency stop gear 2-4 and the fifth gear 3-2 are both meshed and driven by the second gear 1-5 on the transmission lever 1-3, so the rotating speed of the emergency stop gear 2-4 and the fifth gear 3-2 is consistent, the emergency stop gear 2-4 is meshed with the input gear of the gear shifting gear set 2-1, the fifth gear 3-2 is meshed with the input gear of the display gear set 3-1, so the rotating speed of the output gear of the gear shifting gear set 2-1 is consistent with the rotating speed of the output gear of the display gear set 3-1, and the rotating speed of the dial lever 2-20 arranged on the output gear of the gear shifting gear set 2-1 is consistent with the rotating speed of the display block 3-3 arranged on the output gear of the display gear set 3-1, and the rotating speed of the dial lever 2-20 on the output gear of the gear shifting gear set 2-1 is consistent with the rotating speed of the motor controlling the valve, so the rotating speed of the display block 3-3 is consistent with the rotating speed of the valve opening and closing.

[0040] Referring to Figure 10 , Figure 11As shown, the display assembly 3 further comprises a display block 3-3, a display disc 3-4, a display sheet one 3-5, a display sheet two 3-6 and a fixed rod 3-7. The display block 3-3 is fixedly arranged at an output gear of the display gear set 3-1 at one end, the display disc 3-4 is arranged at the other end of the display block 3-3, the display sheet one 3-5 is arranged on the display disc 3-4, the display disc 3-4 is provided with a plurality of convex blocks, one side of the display sheet one 3-5 is provided with a plurality of concave grooves, and the other side of the display sheet one 3-5 is a smooth surface. The display block 3-3 is arranged in the cylindrical hole of the body along the axial direction, the fixed rod 3-7 is a cylindrical rod, one end of the fixed rod 3-7 is provided with a convex block, the convex block on the fixed rod 3-7 is arranged in the convex groove on the second transmission shaft 2-16 of the display gear set 3-1, the other end of the fixed rod 3-7 is provided with a plurality of convex blocks, the display sheet two 3-6 is arranged on the plurality of convex blocks of the fixed rod 3-7, one side of the display sheet two 3-6 is provided with a plurality of concave grooves, and the other side of the display sheet two 3-6 is a smooth surface. The abutting surfaces of the display sheet one 3-5 and the display sheet two 3-6 are smooth surfaces, and the display sheet one 3-5 and the display sheet two 3-6 are both transparent materials. The display sheet one 3-5 is provided with an open character, and the display sheet two 3-6 is provided with a closed character. In this embodiment, the display block 3-3 is fixedly arranged on the output gear of the display gear set 3-1 and rotates with the gear, so that the display sheet one 3-5 arranged on the display block 3-3 rotates with the display block 3-3, the display sheet two 3-6 is arranged on the fixed rod 3-7, the fixed rod 3-7 is arranged on the second transmission shaft 2-16 of the display gear set 3-1, the second transmission shaft 2-16 of the display gear set 3-1 is fixedly arranged on the partition plate 4-1, so that the display sheet two 3-6 is static on the display sheet one 3-5. Since the abutting surfaces of the display sheet one 3-5 and the display sheet two 3-6 are smooth surfaces, the display sheet one 3-5 will not scratch the display sheet two 3-6 when rotating. The rotating speed of the display block 3-3 is consistent with the rotating speed of the dial block 2-21, and the rotating speed of the dial block 2-21 is consistent with the rotating speed of the control valve motor, so that the rotating speed of the display sheet one 3-5 can indicate the speed of the valve switch, and the deflection angle between the display sheet one 3-5 and the display sheet two 3-6 can indicate the opening size of the valve.

[0041] Referring to Figure 13 , Figure 14As shown, the display block 3-3 also has the following embodiments; regarding the second embodiment of the display block 3-3, the display assembly 3 also includes a display piece three 3-8, the display block 3-3 is still fixedly arranged on the output gear of the display gear set 3-1, the display piece three 3-8 is fixedly connected on the display disc 3-4 at the other end of the display block 3-3, the display piece three 3-8 is provided with on-off characters, and the on-off characters are oppositely arranged, and a circle of scales is arranged on the periphery of the display disc 3-4. Regarding the third embodiment of the display block 3-3, the display assembly 3 also includes a display pointer 3-9, the display block 3-3 is still fixedly arranged on the output gear of the display gear set 3-1, the display pointer 3-9 is fixedly connected on the display disc 3-4 at the other end of the display block 3-3, and a circle of scales is arranged around the display disc 3-4, wherein on-off characters are arranged on the opposite two scales, respectively.

[0042] The utility model works: first, according to the demand, first gear shifting component 2, display assembly 3 is shifted, and gear shifting component 2, display assembly 3 must be in the same gear position;The gear shifting is to take up or press down the gear lever 2-13, the lowest is slow gear, the middle is medium speed gear, the uppermost is fast gear, and the higher the gear position, the faster the valve closes or opens. Then start the electric actuator, the first gear 1-1 arranged in the electric actuator is engaged and rotated by the external motor gear, the first gear 1-1 is coaxial with the worm 1-2, the transmission rod 1-3 is provided with a worm wheel 1-4, the worm 1-2 is engaged with the worm wheel 1-4, the transmission rod 1-3 is provided with a second gear 1-5, the second gear 1-5 is engaged with the emergency stop gear 2-4 in the emergency stop assembly 2-2, the emergency stop gear 2-4 is engaged with the variable speed gear set 2-1, and the output end of the variable speed gear set 2-1 is provided with a driving block 2-21 for driving the start-stop sensor 2-27. After receiving the signal of being driven, the start-stop sensor 2-27 sends a signal to the central information processor, and the central information processor sends an instruction to the motor for closing or opening the valve. The second gear 1-5 on the transmission rod 1-3 is also engaged with the fifth gear 3-2, the fifth gear 3-2 is also engaged with the display gear set 3-1, and the display block 3-3 is installed on the output end of the display gear set 3-1. The display piece one 3-5 is installed on the display block 3-3, the display piece two 3-6 is stationary on the display piece one 3-5, the display piece one 3-5 rotates with the display block 3-3, and the rotation speed of the display block 3-3 is consistent with the rotation speed of the valve switch. The speed of the valve switch can be known by the rotation speed of the display piece one 3-5, and the opening size of the valve can be known by the deflection angle between the display piece one 3-5 and the display piece two 3-6. If abnormal conditions occur in the variable speed gear set 2-1, the emergency stop button 2-7 can be directly pressed to interrupt the power transmitted to the variable speed gear set 2-1 to protect the weak parts inside the electric actuator.

[0043] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An electric actuator with variable speed and display function, characterized in that, The power assembly (1), the display assembly (3), and the gear shifting assembly (2); The power assembly (1) is arranged between the display assembly (3) and the gear shifting assembly (2), and drives the display assembly (3) and the gear shifting assembly (2) respectively; The power assembly (1) comprises a first gear (1-1) and a second gear (1-5), wherein the first gear (1-1) is an input end of the power assembly (1) and is engaged with an external motor gear, and the second gear (1-5) is an output end of the power assembly (1); The gear shifting assembly (2) comprises an emergency stop assembly (2-2) and a gear shifting gear set (2-1), wherein the emergency stop assembly (2-2) is arranged between the gear shifting gear set (2-1) and the second gear (1-5); The emergency stop assembly (2-2) comprises an emergency stop gear (2-4), which is engaged with or disengaged from the second gear (1-5) and the input gear of the gear shifting gear set (2-1) respectively; The gear shifting assembly (2) further comprises a start-stop sensor (2-27) for sending an opening or closing signal to a central information processor, which is arranged on one side of the gear shifting gear set (2-1) and is in sliding connection with the output end of the gear shifting gear set (2-1); The display assembly (3) comprises a display disc (3-4) and a display gear set (3-1), which is directly engaged with the second gear (1-5) or an idler gear is arranged between the display gear set (3-1) and the second gear (1-5); The display disc (3-4) is arranged above the display gear set (3-1), at least one display sheet or one display pointer (3-9) is arranged on the display disc (3-4), and the deflection angle of the display pointer (3-9) or the display sheet on the display disc (3-4) corresponds to the opening degree of the valve.

2. The electric actuator with variable speed and display function according to claim 1, characterized in that, Further comprising a shell (4), wherein the power assembly (1), the display assembly (3), and the gear shifting assembly (2) are arranged on the shell (4); The power assembly (1) comprises a worm (1-2), a worm wheel (1-4), and a transmission rod (1-3), the first gear (1-1) is arranged at one end of the worm (1-2) and has an axis parallel to the axis of the worm (1-2), and the worm (1-2) is rotatably arranged on the shell (4); The worm wheel (1-4) is arranged at the end of the transmission rod (1-3) and has an axis parallel to the axis of the transmission rod (1-3), the worm wheel (1-4) is engaged with the worm (1-2), and the axis of the worm wheel (1-4) is perpendicular to the axis of the worm (1-2); The transmission rod (1-3) is rotatably arranged on the shell (4), and the axis of the transmission rod (1-3) is perpendicular to the axis of the worm (1-2); The second gear (1-5) is sleeved on the transmission rod (1-3), the axis of the second gear (1-5) is parallel to the axis of the transmission rod (1-3), and the second gear (1-5) is arranged on one side of the worm wheel (1-4).

3. The electric actuator with variable speed and display function according to claim 1, characterized in that, The emergency stop assembly (2-2) comprises an emergency stop assembly support shaft (2-3), a spring (2-5), a spring support plate (2-6), and an emergency stop button (2-7). The emergency stop component support shaft (2-3) is vertically rotatably arranged on the shell (4), the spring support plate (2-6) is arranged on the emergency stop component support shaft (2-3), and one end of the spring (2-5) is fixedly arranged on the spring support plate (2-6); The emergency stop gear (2-4) is slidably connected to the emergency stop component support shaft (2-3), and the axis of the emergency stop gear (2-4) is parallel to the axis of the emergency stop component support shaft (2-3); The other end of the spring (2-5) is fixedly arranged on one side of the emergency stop gear (2-4); The emergency stop button (2-7) is arranged on one side of the emergency stop gear (2-4), and the lower end of the emergency stop button (2-7) is rotatably connected to the other side of the emergency stop gear (2-4).

4. The electric actuator with variable speed and display function according to claim 1, characterized in that, The variable speed gear set (2-1) comprises a variable speed gear shaft (2-12), a variable speed support rod (2-14), a variable speed rod (2-13), and a fourth gear (2-18); The variable speed gear shaft (2-12) is arranged on the shell (4), and at least one fourth gear (2-18) is arranged on the variable speed gear shaft (2-12); The variable speed gear shaft (2-12) is arranged between the emergency stop component (2-2) and the variable speed rod (2-13); One of the fourth gears (2-18) arranged on the variable speed gear shaft (2-12) is engaged with the emergency stop gear (2-4); The variable speed support rod (2-14) is arranged on the shell (4), and the variable speed rod (2-13) is movably connected to the variable speed support rod (2-14); the lower end of the variable speed rod (2-13) is provided with a fourth gear (2-18), and the fourth gear (2-18) on the variable speed rod (2-13) is engaged with one of the fourth gears (2-18) on the variable speed gear shaft (2-12) or engaged with other gears on the variable speed gear shaft (2-12).

5. The electric actuator with variable speed and display function according to claim 1 or 4, wherein The variable speed gear set (2-1) further comprises a first transmission shaft (2-15), a second transmission shaft (2-16), and a combination gear (2-19); the first transmission shaft (2-15) and the second transmission shaft (2-16) are arranged on the shell (4); The first transmission shaft (2-15) is provided with at least one, the second transmission shaft (2-16) is provided with at least one, the first transmission shaft (2-15) is arranged on one side of the variable speed rod (2-13), and the second transmission shaft (2-16) is arranged on one side of the first transmission shaft (2-15); At least one combination gear (2-19) is arranged on the first transmission shaft (2-15), and one of the combination gears (2-19) on the first transmission shaft (2-15) is engaged with the fourth gear (2-18) on the variable speed rod (2-13) or the fourth gear (2-18) on the variable speed rod (2-13) is engaged with other gears on the first transmission shaft (2-15); At least one combination gear (2-19) is arranged on the second transmission shaft (2-16), and the combination gear (2-19) on the second transmission shaft (2-16) is engaged with the combination gear (2-19) on the first transmission shaft (2-15).

6. The electric actuator with variable speed and display function according to claim 1, wherein, The variable gear set (2-1) further comprises a shifting lever (2-20) and a shifting block (2-21), one end of the shifting lever (2-20) is fixedly arranged on the output gear of the variable gear set (2-1), and the other end of the shifting lever (2-20) is provided with the shifting block (2-21). The shifting block (2-21) is a protruding block extending to one side of the shifting lever (2-20).

7. The electric actuator with variable speed and display function according to claim 1 or 6, wherein The start-stop sensor (2-27) comprises a pushing block (2-28) fixedly connected or slidingly connected to the start-stop sensor (2-27). The shifting block (2-21) is slidingly connected with the pushing block (2-28) or is disconnected therefrom.

8. The electric actuator with variable speed and display function according to claim 1, characterized in that, The display assembly (3) comprises a display block (3-3), one end of the display block (3-3) is fixedly connected to the output gear of the display gear set (3-1), and the other end of the display block (3-3) is provided with a display disc (3-4). The display disc (3-4) is fixedly connected or movably connected with a display sheet or a display pointer (3-9).

9. The electric actuator with variable speed and display function according to claim 1, characterized in that, The wiring terminal (4-3) is fixedly connected to the shell (4). The lead wire of the start-stop sensor (2-27) is connected to the wiring terminal (4-3). The lead wire of the central information processor is further connected to the wiring terminal (4-3).

Images